SSE Noise Problem - Help? - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > Tubelab

Tubelab Discussion and support of Tubelab products, prototypes and experiments

Reply
 
Thread Tools Search this Thread
Old 12th January 2014, 07:23 PM   #1
diyAudio Member
 
Join Date: May 2009
Default SSE Noise Problem - Help?

Hi
I have an SSE, about 6 years old. I use the SSE for the treble end of a bi-amped system. One channel is noisy (loudly hissing, sometimes pinging) the other almost silent.

Swapped output tubes - no help
Replaced output tubes - no help (except no pinging as yet)
Replaced input tube - no help
Recapped entire board - no help
Re-made all terminal connections - no help

No matter what I've done the same channel has a problem, the other channel doesn't.

Anybody have any other ideas? Could the 10M45S be the problem?

Thanks,
Charlie
  Reply With Quote
Old 14th January 2014, 12:05 PM   #2
rmyauck is offline rmyauck  Canada
diyAudio Member
 
Join Date: Apr 2009
Try checking tubes socket (are clean,good and tight, and use a dental tool if not) , plus check resistors. You could swap IC's that you mentioned.

Though not related it doesn't hurt to add the SS diode mod for helping the rectifier tube live either.

Last edited by rmyauck; 14th January 2014 at 12:08 PM.
  Reply With Quote
Old 14th January 2014, 08:56 PM   #3
rknize is offline rknize  United States
diyAudio Member
 
rknize's Avatar
 
Join Date: Feb 2009
Location: Chicagoland
Send a message via AIM to rknize Send a message via Yahoo to rknize
Other than the 10M45, maybe a noisy resistor above the plate of the input tube on that channel?
  Reply With Quote
Old 15th January 2014, 10:53 AM   #4
diyAudio Member
 
Join Date: May 2009
Default Thanks guys

I never would have thought about resistors - maybe the current set or blocking resistor could indeed be the culprit. Even the grid stopper for that matter, I guess.
I'll try an RR this weekend and see if that helps.
Thanks again,
Charlie
  Reply With Quote
Old 15th January 2014, 05:47 PM   #5
rknize is offline rknize  United States
diyAudio Member
 
rknize's Avatar
 
Join Date: Feb 2009
Location: Chicagoland
Send a message via AIM to rknize Send a message via Yahoo to rknize
Also check for unexpected solder wicking or whiskers under the noval socket.
  Reply With Quote
Old 15th January 2014, 11:26 PM   #6
diyAudio Member
 
Join Date: May 2009
Will do - thanks for the heads-up.
Charlie
  Reply With Quote
Old 16th January 2014, 12:20 AM   #7
diyAudio Member
 
tubelab.com's Avatar
 
Join Date: Jul 2005
Location: West Virginia panhandle
Resistors are a common noise source. Often a bad one is temperature sensitive. They used to sell circuit freeze spray at Radio Shack or electronics component distributors that catered to the repair industry. I don't know where to get it now, but I know it still exists, we have it at work.

You spray a warm component and it drops the temp about 50 degrees instantly. Obviously don't spray a hot tube or your fingers.

You spray each part one at a time. If the noise changes intensity or pitch you have found a bad part. Resistors usually quiet down when cooled, semiconductors can do anything, but should not do anything other than a small change in operating point.
__________________
Too much power is almost enough! Turn it up till it explodes - then back up just a little.
  Reply With Quote
Old 16th January 2014, 12:39 AM   #8
diyAudio Member
 
Join Date: Feb 2010
Always interesting reading. Thanks. Was listening to my SSE today...sounds great.
  Reply With Quote
Old 16th January 2014, 01:00 AM   #9
sesebe is offline sesebe  Romania
diyAudio Member
 
Join Date: Jan 2011
Location: Iasi
I suspect a coupling or decoupling capacitor....
  Reply With Quote
Old 18th January 2014, 02:44 PM   #10
diyAudio Member
 
Join Date: May 2009
Excellent George, thanks.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
SSE possible transformer problem. a95sonoma Tubelab 24 16th May 2012 03:31 AM
possible problem with sse royd55 Tubelab 1 19th July 2010 03:16 PM
Auricaps in SSE and SSE as a guitar amp. DanP Tubelab 5 12th July 2010 09:20 AM
possible problem with my sse royd55 Tubelab 4 1st March 2010 04:15 PM
Noise Problem. raveenvijendren Solid State 0 14th November 2005 06:03 AM


New To Site? Need Help?

All times are GMT. The time now is 06:06 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2